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AMQ(8)                      System Manager's Manual                     AMQ(8)



NAME
       amq - automounter query tool

SYNOPSIS
       amq [ -fimpqsvwHTU ] [ -h hostname ] [ -l log_file ] [ -x log_options ]
       [ -D debug_options ] [ -P program_number ] [[ -u ] directory ...  ]

DESCRIPTION
       Amq provides a simple way of determining the current state of amd
       program.  Communication is by RPC.  Three modes of operation are
       supported by the current protocol.  By default a list of mount points
       and auto-mounted filesystems is output.  An alternative host can be
       specified using the -h option.

       If directory names are given, as output by default, then per-filesystem
       information is displayed.

OPTIONS
       -f     Ask the automounter to flush the internal caches and reload all
              the maps.


       -h hostname
              Specify an alternate host to query.  By default the local host
              is used.  In an HP-UX cluster, the root server is queried by
              default, since that is the system on which the automounter is
              normally run.


       -i     Print information about the mount maps.


       -l log_file
              Tell amd to use log_file as the log file name.  For security
              reasons, this must be the same log file which amd used when
              started.  This option is therefore only useful to refresh amd's
              open file handle on the log file, so that it can be rotated and
              compressed via daily cron jobs.


       -m     Ask the automounter to provide a list of mounted filesystems,
              including the number of references to each filesystem and any
              error which occurred while mounting.


       -p     Return the process ID of the remote or locally running amd.
              Useful when you need to send a signal to the local amd process,
              and would rather not have to search through the process table.
              This option is used in the ctl-amd script.


       -q     Suppress error messages produced when attempting synchronous
              unmounts with the -u option.


       -s     Ask the automounter to provide system-wide mount statistics.


       -u     Ask the automounter to unmount the filesystems named in
              directory instead of providing information about them.  Unmounts
              are requested, not forced.  They merely cause the mounted
              filesystem to timeout, which will be picked up by amd's main
              scheduler thus causing the normal timeout action to be taken.
              If the -u option is repeated, amq will attempt to unmount the
              file system synchronously by waiting until the timeout action is
              taken and returning an error if the unmount fails.  Any error
              messages produced may be suppressed with the -q option.


       -v     Ask the automounter for its version information.  This is a
              subset of the information output by amd's -v option.


       -w     Translate a full pathname as returned by getcwd(3) into a short
              Amd pathname that goes through its mount points.   This option
              requires that Amd is running.


       -x log_options
              Ask the automounter to use the logging options specified in
              log_options from now on.  Note that the "fatal" and "error"
              options cannot be turned off.


       -D debug_options
              Ask the automounter to use the debugging options specified in
              debug_options from now on.


       -H     Display short usage message.


       -P program_number
              Contact an alternate running amd that had registered itself on a
              different RPC program_number and apply all other operations to
              that instance of the automounter.  This is useful when you run
              multiple copies of amd, and need to manage each one separately.
              If not specified, amq will use the default program number for
              amd, 300019.  For security reasons, the only alternate program
              numbers amd can use range from 300019 to 300029, inclusive.


       -T     Contact amd using the TCP transport only.  Normally amq will try
              TCP, and if that failed, will try UDP.


       -U     Contact amd using UDP (connectionless) transport only.  Normally
              amq will try TCP, and if that failed, will try UDP.


FILES
       amq.x               RPC protocol description.


CAVEATS
       Amq uses a Sun registered RPC program number (300019 decimal) which may
       not be in the /etc/rpc database.

       If the TCP wrappers library is available, and the use_tcpwrappers
       global amd.conf option is set to ``yes'', then amd will verify that the
       host running amq is authorized to connect.  The amd service name must
       used in the /etc/hosts.allow and /etc/hosts.deny files.  For example,
       to allow only localhost to connect to amd, add this line to
       /etc/hosts.allow:

              amd: localhost

       and this line to /etc/hosts.deny:

              amd: ALL


SEE ALSO
       amd(8), amd.conf(5), hosts_access(5).

       ``am-utils'' info(1) entry.

       Linux NFS and Automounter Administration by Erez Zadok, ISBN
       0-7821-2739-8, (Sybex, 2001).

       http://www.am-utils.org

       Amd - The 4.4 BSD Automounter


AUTHORS
       Jan-Simon Pendry <jsp@doc.ic.ac.uk>, Department of Computing, Imperial
       College, London, UK.

       Erez Zadok <ezk@cs.sunysb.edu>, Computer Science Department, Stony
       Brook University, Stony Brook, New York, USA.

       Other authors and contributors to am-utils are listed in the AUTHORS
       file distributed with am-utils.



                               15 September 2011                        AMQ(8)